RightsMetadata added to FileAssets, inherit permissions from GenericParent.
BelongsTo Find does a standard search for types of ActiveFedora::Base
Added Assets controller for FileDownloads with appropiate routes
Etd changes: rights statement issue fixed, content file id preserved
travis.yml: Configured to not install development dependencies
Fixed FileAsset RightsMetadata ns
Adding basic downloads display, updated contentMetadata displayField name